318 results found

Search Results for: layer

Mesophyll layer

Definition noun, plural: mesophyll layers (botany) The tissue in the interior of a leaf made up of photosynthetic... Read More

Malpighian layer

Definition noun The lower layer of epidermis consisting of non-keratinized, viable cells, in contrast to the outer (upper)... Read More

Basal layer

Definition noun (1) The innermost layer of the epidermis made up of basal or germinative cells capable of proliferating by... Read More

S layer

Definition noun A single layer of about 5 to 25 nm in thickness, comprised of identical proteins (glycoproteins) surrounding... Read More

Epidermis

Epidermis Definition What is the epidermis? We can define epidermis as one or more layers of cells forming the tough and... Read More

Horny layer of nail

Horny layer of nail --> stratum corneum unguis the outer, horny layer of the nail. Synonym: cornified layer of nail,... Read More

Mantle layer

Mantle layer The nuclear zone of the developing neural tube between the marginal layer and the ependymal layer; forms the... Read More

Myocardium

Myocardium Definition What is the myocardium of the heart?  It is the muscular middle layer of the heart that is... Read More

Thin-layer chromatography

Definition noun An alternative form of thin layer chromatography, a type of chromatography using a thin layer of stationary... Read More

Nitabuchs layer

Nitabuch's layer --> Nitabuch's membrane a layer of fibrin between the boundary zone of compact endometrium and the... Read More

Layer

Layer 1. One who, or that which, lays. 2. A corruption of lair That which is laid; a stratum; a bed; one thickness, course,... Read More

Cell wall

The cell is the structural, functional, and biological unit of all organisms. It is a membrane-bound structure containing... Read More

Simple squamous epithelium

Simple Squamous Epithelium Definition Simple squamous epithelium, also known as simple squamous epithelial tissue or... Read More

Slime layer

Definition noun An irregular, diffuse, unorganized form of glycocalyx in bacterial cells, comprised mostly of... Read More

Waldeyers zonal layer

Waldeyer's zonal layer --> dorsolateral fasciculus A longitudinal bundle of thin, unmyelinated and poorly myelinated... Read More

Alimentary canal

Definition of Alimentary canal What is the alimentary canal? The alimentary canal is a muscular hollow continuous tubular... Read More

Aleurone Layer

A layer found in some plant seeds that excretes enzymes used to promote embryonic growth. Gibberellin, a family of growth... Read More

Turgidity

Turgidity is the state of being turgid or swollen, especially due to high fluid content. In general context, turgidity... Read More

Ecosystem carbon emissions from forest fires in Alaska

Carbon emissions in Alaska relied on measurements of trees and changes in surface organic layer carbon pools after... Read More

Community Patterns

By: Maria Victoria Gonzaga In the previous lesson, we learned what a population is, its attributes, and processes... Read More

Stratified columnar epithelium

A stratified columnar epithelium (plural: stratified columnar epithelia) is a type of stratified epithelium in which the... Read More

Monolayer

monolayer (Science: chemistry) A single layer of any molecule, but most commonly applied to polar lipids. Can be formed at... Read More

Boundary layer

Boundary layer (Science: radiobiology) in fluid flow, a narrow region next to a fixed boundary or surface where the fluid... Read More

A layer

A layer (Science: molecular biology) right handed double helical dna with approximately 11 residues per turn. Planes of base... Read More

Stratified squamous epithelium

Definition noun, plural: stratified squamous epithelia A type of stratified epithelium in which the topmost layer is made up... Read More

Parenchyma

Parenchyma Definition What does parenchyma mean? Let's define the word "parenchyma". Most of the functional tissues in... Read More

Epithelium

An epithelium is a type of animal tissue made up of densely packed cells (called epithelial cells) that rest on a basement... Read More

Pith

Pith Definition In general, the term "pith" refers to the "soft inner portion" of something. In botany, a pith refers... Read More

Primary cell wall

Definition noun plural: primary cell walls ˈpɹaɪməɹi sɛl wɔːl The layer of the plant cell wall that forms prior to... Read More

Stratified epithelium

Definition noun, plural: stratified epithelia An epithelial tissue comprised of more than one layer of epithelial cells,... Read More

Endomembrane system

Ever wondered how biomolecules are made within the cell and then they are released outside the cell for use by the body?... Read More

Phelloderm

Definition noun, plural: phelloderms (botany) A part of the periderm made up of cells produced inwardly by the cork... Read More

Stratum germinativum

Definition noun The innermost layer of the epidermis comprised of keratinocyes capable of proliferating by mitosis,... Read More

Stratified cuboidal epithelium

Definition noun, plural: stratified cuboidal epithelia A type of stratified epithelium in which the topmost layer is made up... Read More

Tapetum

Definition noun, plural: tapeta (botany) A layer of nutritive cells within the sporangium, providing nutrition for growing... Read More

Periderm

Definition noun, plural: periderms (botany) An outer covering that replaces the epidermis of certain plants (embryology)... Read More

Tissue

Tissue Definition What is tissue in the body? The body tissue is an aggregation of cells that function together and have a... Read More

Plasma membrane

Do all cells have a plasma (or cell) membrane? Yes, all cells have a biological membrane that separates the protoplasm from... Read More

Synovial membrane

Definition noun, plural: synovial joints The connective tissue lining the inner surface of the joint capsule of a synovial... Read More

Stratum corneum

Definition noun The outermost layer of the epidermis comprised of corneocytes and accounts for most of the protective... Read More